That's all way over my head! I only ever grab OBJ or 3ds freebies, and if they come with textures at all ( so many just don't) they are usually jpg or bitmaps or the occasional tif. Since Poser and Blender are the only rendering progs I have, and Silo and PoseRay the only mesh programs, I only ever end up importing/exporting those two formats. I see a variety of others available in the import menu but have never tried them...I briefly tried using Bryce but could never get a handle on the way it exports textures so I gave up. xD